Air-heater



E. T. WH

- AIR APPLICATION r HEA ILEDM Patented July 26, 1921 UNITED STATESYPIATENT,OFFICEQ'Z" EZRA T. wnrmme, .orennnn LAKE,- W sconsin.

" AIR-HEATER.

To all whom i-t'mag concern Be it known that I/EZRA WHITING, a citizen of the United States, andgresid'ent of Green Lake, in the county of Green Lake and State of WVisconsin, have invented certain new anduseful lm-provementsin Air- Heaters; and I do hereby declare that the following is a full, clear, and exact description thereof. I

My invention relates to .new and useful improvements in air heaters, as disclosed in Patent Nol l2,846 dated December 16th, 1890, and has particular reference to those devices which formunits for use in connection with furnaces and stoves of ordinary construction which are already in use.

mum the heat wastage which is prevalentinmost types of furnaces and stoves. In'other words it is designed to provide a supplein'ental heater for using the normally wasted ieat.

A further "object provide a simply constructed supplemental heating device which can be inexpensively constructed of sheet metal and which can be readily installed without dilii'culty.1

Another important object of the invention is to provide "a device of this character which can be quickly and easily disassembled for the purpose of cleaning- \Vith these, and other objects invie w the invention consists in the "novel features of construction, combination and -arran'g'ement of parts which will be more particularly described and claimed and shown in the drawin s in which:

l igure 1 represents a horizontal section taken substantially on the plane of the line 1 1 of Fig. 2.

Fig. 2 is a part sectional and part elevational view of the heater. 7

Although the embodiment of the invention illustrated in the accompanying drawing is capable of use in substantially any position, the parts will be referred to in the following explanation of the construction and use of the device as they appear in the drawing. That is to saythose parts which are disposed at the top of the structure shown in Fig. 2 will be referred to as upper portions, and the'bo-ttom parts as lower portions, etc., this being done for convenience in description. Various changes -may be of the invention is to.

-S pecification OfLctters Patent. f Patented J ly 26 1921 Application med March 1, 1920. Se-riaIN-O. 362,599.

made in the construction and use of the heater without departing from the principles or sacrificing any of the advantages of the invention. 7 p

Referring more particularly to the accompanying drawing, it will be seen that the 1 invention comprises a portion through which the hot waste gases from the furnace or stove pass, and a portion through which air flows in order'to'be heated by said gases.

Specifically the 'heater includes an upper head 1, a lower head 2 connected by outer sleeves 3 and 34,:and inner sleeves 4. Each of the heads 1 and i2 is preferably formed from a circular sheet metal plate 5 to the periphery of which issecured an annular wall or flange 6, a similarly constructed cover 17 being engaged therewith. -It will be noticed that the annular flange of the cover is disposed around the wall 6 and forms a gas-tight jointtherewith in the case opening is made. These tttachin-g sleeves extend laterally ofthe heads 1 and 2,v and one provides an intake or supply member for the heater and the other an outlet or exhaust'member therefor.

In the present instance the attaching sleeves 12 are disposed to one side of the center of the covers 7 and are alined with one of the outer sleeves 3, which sleeve does not receive one of the inner sleeves 4 as do the other outer sleeves 3 because of the location of the latch members 8 at the opposite ends of said sleeve 8'.

In attaching or removing the covers 7 the spring arms 8 may be manually sprung to engage or disengage the keepers 10, the arms being readily accessible through the sleeves 12. V

The hereinbefore referred to inner sleeves 4 are disposed through the outer sleeves 3,

but being of a smaller diameter are spaced from the latter. The lower ends of the sleeves 4,: are connected with the circular plate of the lower cover 7 and open therethrough, whereas the upper ends thereof terminate inwardly of the s1m1lar plate of the upper cover 7 and are designed to tele-V scopically receive thimbles 13. These thimbles l3 depend from the upper cover 7, they "being carried thereby and opening there'- through. Thus in assembled position the inner sleeves 4 and the thimbles 13 provide air passage Ways through the heater, while the outer sleeves 3 and 3' circulate the hot gases from one head to the other and around the inner sleeves.

As disclosed in the original patent referred to, the sleeve 3' is provided with a damper as indicated in dotted lines, whereby the smoke of hot products may be controlled so as to causegthem'to fiow directly through the main smoke sleeve 3', or whereby the damper can beclosed to cause the products of the combustion to travel in a tortuous route about the various sleeves 4, and from thence back into the'upper part of the main sleeve 3'. a

In applying this particular type of heater, asection of the ordinary furnace chimneypipe is removed and the two ends thus formed engaged respectively withthe upper and lower attaching sleeves 12. These sleeves 12 being located to one side of the center of the heater as'in the present embodiment of the invention, said heater can be readily associated with a chimney-pipe which is located relatively close to a wall or other ObJBCt. If, however, there is considerable space between the chimney-pipe and such wall, the attaching sleeves 12 may be arranged in the center of the covers so as to provide a slightly more effective distribution I claim:

1. In a heater, end heads, each of said heads having a' removable cover, an outer tubular member connecting the heads to circulate fluid from one to the other, a supply member entering one of the heads, an exhaust member connected with the other head, and an inner tubular member extending through the outer tubular member and opening through each of'the heads, said inner tubular member being separable into 'two sections,one section being secured to each cover and removable therewith.

2. In a heater, end heads, each of saidheads having a removable cover, an outer tubular member connecting the'heads to circulatefiuid from one to the other, a supply member entering'one of the heads, an exhaust member connected with theother head,

an inner tubular member extending through the outer tubular member and secured atone end'to one 'of'said covers, its opposite end terminating within the other head, and a thimble extending into the last mentioned head and carried by the other cover, said thimble being engageable with the last mentioned end of the inner tubular member.

' 3.'In a heater, end heads, each of said tubular member connecting the heads to circulate fiuid'from-one to the other, a supply member entering .1 one of the heads, an exhaust member connected with the other head,

heads having a" removable cover, an outer an inner tubular member extending from the outer tubular member and secured at one end toone of said covers, its opposite end tern1inating within the other head, and a thimble extending into the last mentioned head and carried by the other cover, said thimble bemg engageable with the'last mentioned end of the inner tubular member, and means for detachably securing the covers to their respective heads. i i

In testimony that I claim the foregoing have hereunto set my hand at Green Lake, in the county Qf Green Lake and'State ofWisconsin. g V

EZRA T. 'WHITING. 

